P    #regions in PPM
# 2019-02-19 18:38:12 +0000  2219445P@LN-D8CB8AB0767B
# low field   high field   mi   maxi
  5.948270395141827  5.441274959301407  0.116  5.909  # for region 1
  3.995266850038238  3.502552975770788  1.275  8.111  # for region 2
  2.213642043810284  1.8208991005536206  0.324  5.701  # for region 3
  1.0496947756132635  0.653381441963358  2.178  16.000  # for region 4
